▎ 摘　　要

NOVELTY - Preparing a graphene composite plastic sheet involves modifying the surface of the bleaching earth with a coupling agent, then mixing with the acrylate copolymer, adding the printing layer matrix composed of polyethylene and white masterbatch, and extruding into a white film. The polyethylene and black masterbatch are mixing and extruding into a black film. The black film, the ethylene-vinyl alcohol copolymer, and the white film are layer-by-layer composited by a dry composite process in the order from bottom to top to realize the modification of the printed layer to graphene composite plastic sheet of alkene composite plastic sheet. USE - Method for preparing a graphene composite plastic sheet. ADVANTAGE - The method enables to prepare a graphene composite plastic sheet, which has good barrier effect on small molecules such as gas, and realizes barrier function and printing function of printing layer, effective superposition has greatly improved preservation effect on milk.